Window-ventilator.



P. CARLSON.

WNDOW VENTILATOR.

APPLICATION FILED MAR-18, 1915.

1,186,468. I Patented June 6, 191

STATES PATENT GFFICE.

PETER CARLSON, OF CHICAGO, ILLINOIS.

WINDOVI-VENTILATOR.

Application filed March 18, 1915.

T 0 all whom it may concern:

Be it known that PETER CARLSON, a citizen of the United States of America, and resident of 7059 South Aberdeen street, Chicago, Cook county, Illinois, have invented a certain new and useful Improve ment in lVindow-Ventilators, of which the following is a specification.

My invention relates to window ventilators of the kind which are adapted to be adjusted in position at the bottom of the window, and usually inside thereof, and which are constructed to admit fresh air into the room when the lower window sash is partially raised.

The object of my invention, generally stated, is to provide a comparatively simple and inexpensive window ventilator of the foregoing general character.

A special object is to provide a novel con-.

struction and arrangement whereby a ventilator constructed in accordance with my invention will occupy but little room, will be comparatively inconspicuous, and will harmonize nicely with the woodwork of the window;

It is also an object to provide certain details and novel features of construction and combinations tending to increase the general efliciency and desirability of a window ventilator of this particular construction and mode of operation.

To these and other useful ends my invention consists in matters hereinafter set forth and claimed.

In the accompanying drawings-Figure 1 is an inside elevation of the lower portion of a window equipped with a ventilator embodying the principles of my invention. Fig. 2 is a horizontal section on line 22 in Fig. 1. Fig. 3 is a vertical section on line 33 in Fig. 1. Fig. A is an enlarged detail section on line H in Fig. 3.

As thus illustrated, my invention comprises a window provided with a frame A of any suitable form or construction, having a window sill B, and provided with a lower sash G which slides up and down in the usual and well known manner. The lower portion of said sash is provided with handles c, of any known or suitable form, for opening and closing the window.

The ventilator comprises a horizontal member D which extends between the two sides of the window frame and which rests at its lower edge upon the window sill.

Specification of Letters Patent.

Patented June 6, 1916. Serial No. 15,234.

This member can be made ofwood, and in such case the front wall is vertical, as shown in 3, and the top (Z is horizontal and provlded with openings or perforations 1 extending in a row from end to end thereof. These two walls form an angle, and the outer or front wall 2 has its lower edge pro vided with hinges E which hold the member D against movement toward and below the sash, but which permit said member to swing away from the sash when'it is desired to uncover the handles 0 and open the window; and in this connection it will be understood that normally the handles 0', when the window is closed, occupy positions in the space below the top wall (Z of the ventilator. With this arrangement the center of gravity of the ventilator is brought inside of the hinges and the wall 2 and thus is suflicient to hold the ventilator in position against the sash. Said hinges have slots 0 which are engaged by screws 3 inserted downwardly and into the window sill, these slots permitting removal of the hinges by slight adjustment of said screws when it is desired to disconnect the ventilator from the window. lVhen composed of two strips of wood, as shown in the drawings, the member D may be provided with angle pieces 4: which serve as braces, it being understood that one of these pieces is provided at each end of the ventilator, and that as many intermediate pieces can be employedas are necessary, depending upon the size of the window and the character of the materials employed. At its opposite ends the member D is provided with springs F which bear against the sides of the window frame A, and whereby the member D can be held in different positions away fro-m the sash; and with this arrangement the ventilator can be disposed with its upper edge a slight distance from the sash, in order to increase the influx of air if the openings 1 are not sufiicient for this purpose. The ventilator is adapted to rest open with its wall 2 horizontal and the wall (Z extending upward if it be necessary for any purpose to do this. But within limits the springs F serve automatically to hold the ventilator in different positions. I

As previously stated, .the ventilator can be made of wood, and in such case it can benicely finished to harmonize in the desired manner with the woodwork of the window. It occupies but little room, is

comparatively inconspicuous, and can be easily applied to the window. Of course, and if such is necessary or desirable, the ventilator can be made of other materials, such as sheet metal, and can be given any suitable or desired shape. Preferably, however, the ventilator is of such shape and C011- struction that its lower edge rests on the window sill and its upper edge against or close to the lower sash of the window. Also, the lower ed e of the ventilator is preferably hinged to the window sill in the manner and for the purpose described, but may be secured in place by any suitable or desired means.

lVith the foregoing construction, it will be seen that the outer wall 9 of the ventilator is vertical when in use, and that the top wall (Z serves as a weight to hold the ventilator against the sash. In other words, the ventilator tends always to gravitate toward the window, when in use, and thus holds itself in operative position. It will not fall outward and away from the window except when forcibly swung out a distance suflicient to bring the center of gravity outside of the hinges. Thus the holding devices F, which frictionally engage the window frame, can be omitted, or may become ineffective, and still the ventilator will be capable of holding itself in the proper position for use.

lVit-h the hinges constructed as shown (see Fig. 3.), the ventilator cannot tilt farther than the sash, and is not liable to get under the sash, but to the contrary is always in such position that the sash can be raised and lowered. Of course, if handles are provided on the sash, as shown, the ventilator will have to be tilted outward a little, just while the handles are passing the edge of the top wall, but except for this the sash can be raised and lowered freely and the ventilator can be retained in its operative position, or

in outwardly adjusted positions, depending upon the manner in which it is desired to regulate the influx of air. When the ventilator is tilted outward, the openings 1 will be directly opposite the opening between the lower edge of the sash and the window sill, and will be in the path of the incoming air, so that some of the air will be deflected upward by the top wall, while the balance of the air will pass through said openings into the room. Thus, the construction affords opportunity for various ways of regulating the ventilation.

hat I claim as my invention is:

A window ventilator comprising a vertical front wall disposed a distance from the window sash and hinged between its ends at the lower edge thereof to the window sill, a horizontal top wall fixed at one edge to the upper edge of said vertical wall and provided with openings for admitting the into the room, the two walls forming a cham; ber between them extending below said openings, both walls having their opposite ends fitted closely within the framing of the window, the other edge of said top wall being presented to the window sash, allowing the sash to move up and down to vary the influx of air into said chamber, the center of gravity of said walls being disposed between the window sash and the horizontal axis about which. the hinged wall swings, the vertical position of said front wall being the limit of motion toward the window of the hinges thereof, so that the ventilator cannot move under the sash, and the two walls being movable outwardly to remain in tilted position with said openings in the path of the air entering from the window.

Signed by me at Chicago, Illinois, this 13th day of March 1915.

PETER OARLSON.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

